#pragma once

#define  _CRT_SECURE_NO_WARNINGS 1

#include <iostream>
#include<stdlib.h>

using namespace std;

void HeapSort(int* arr, int n);

void Topk(); 

void QuickSort1(int* arr, int left, int right);
void QuickSort2(int* arr, int left, int right);
void QuickSort3(int* arr, int left, int right);

